This book is a theoretical and practical guide for mental health professionals who wish to utilize existential principles in their social work and clinical practice. Existential questions concerning life situations, such as anxiety, suffering, choosing, authenticity, are at the heart of the craft of any helping profession. The book aims to confront students and practitioners with the need to be simultaneously philosophical and experiential in their clinical approach. Written in an accessible tone, Eisikovits and Buchbinder bridge existential-philosophical concepts often seen as removed from everyday practice and the practical concerns of therapy. Each chapter presents a concept from existential philosophical tradition, such as anxiety, meaning making, time, and space, and then demonstrates their use by drawing from real-life clinical examples and interventions. The book illustrates their implementation in social work practice with reference to values such as client participation, self-determination, and free will. The book is intended for courses and advanced training in existential social work and therapy. It is essential reading for training social workers, counselors, therapists, and other helping professionals interested in existentialism.